Improvement in electric registers and time-detecters



HQWHITTEMORE. ELECTRIC REGISTER AND TIME DETECTOR. No.177,671. Patented May 23,1876.

' NJETEIS, PHOTO-LITHDGRAPHER, WASHINGTON D C UNITED STATES PATENT QFFIO'E.

HARRISON WHITTEMOBE, OF SOMERVILLE, MASSACHUSETTS.

IMPROVEMENT IN ELECTRIC REGISTERS AND TlME-DETECTERS.

Specification forming part of Letters Patent No. 1'77,67 l. dated May 23, 1876; application filed October 28, 1875.

To all whom it may concern:

Be it known that I, HARRISON WHITTE- MORE, of Somerville, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in Electric Registers and Time-Detecters for Watchmen and others, which improvement is fully set forth in the following specification, reference being had to the accompanying drawings.

The object of my invention is to enable a watchman or other person to signal from a number of boxes or stations, and to have said signals and the time at which they were made intelligibly and permanently recorded by means of a single magnet, instead of having a separate magnet for each box or station, as has heretofore been the case; and my invention consists in having (in combination with a series of circuit-closers, A A, a time-piece, B, moving a strip of paper, 0, and a magnet, D) a traversing marker, E, moving across the paper strip 0, and marking thereon whenever the circuit is completed by any one of the circult-closers A A, and also in completing the circuit of a local battery for striking an alarm, by bringing the key (I in contact with a stop, 0, on the end of the lever b.

The operation is as follows: Any one of the circuit-closers is set in motion; the first projection on its rim completes the circuit; the armature of the magnet is depressed, and releases the trigger that holds the mechanism that gives motion to the traversing marker E, by means of a cam-wheel acting on the end of the rod to which are attached the traversing marker E and the key 61. By this means the traversing marker E is brought over the end of the lever b and below the paper slip O, and as often as the circuit is closed by a projection on the rim of the circuit-closer the armature is depressed, the end of the lever 12 strikes the marker E, which makes an indentation in the paper strip 0, and this paper strip 0 is so moved by the time-piece B as to have the time printed on that part of its surface over the marker E corresponding with the time of the time-piece. The projections are different on the difierent circuit-closers, and, consequently, make different indentations on the paper strip, therebygiving a different signal from the difierent boxes or stations where the circuit-closers are located. I

When an alarm is to be sounded, the circuit is closed by a switch in each box or station, the armature is depressed, the end of the lever bis raised, the key at is brought in contact with the stop 0, and the circuit of the local battery completed.

Figure 1 shows a front elevation; Fig. 2, a plan, and Fig. 3 shows acircuit-closer and switch.

I claim as my invention- 1. In combination, aseries of circuit-closers, A A, a magnet,D, strip 0, moved by a timepiece, and traversing marker E, whereby one or more marks in a straight line are made across the strip by manipulating any of the circuit-closers.

2. The circuit a, magnet D, lever I), stop 0, key d, mechanism F, and circuit at, substantially as described.

3. In combination, the circuit a, magnet D, lever I), stop 0, key d, mechanism F, cam f, and cam-rod g, substantially as described.

H. WHITTEMORE.

Witnesses:

P. A; Down, J. E. MAYNADIER. 

